Lister-plow



S. K. DENNIS.

LISTER PLOW.

APPLICAI'ION FILED JULY 8,1919. Lfl 3. Fatemi Apr. 5, mi.

2 SHEETS-SHEET 1.

S. K. DENNIS.

` LISTER PLOW.

APPLxcArloN FILED JULY 8 1915' @ETE STATE SAMUEL K. DENNIS, OF CHICAGO, ILLINOS, ASSIGNOR T0 N'IERNATIONAL HAB.- VESTER COMPANY, A CORPORATION OF NEW' JERSEY.

LISTERPLOW.

Application filed July 8, 1919.

T 0 all whom t may 00a-cern.' Y

Be it known that l, SAMUEL l. DENNIS, a .citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented` certain new and useful Improvements in Lister-Flows, of which the following is a full, clear, ano exact specification.

This invention relates to lister plows.

An obj-ect of my invention is to provide an improved means for leveling the lister plow base when the forward wheels are on different levels, as when one is in a furrow and the other is on the unplowed land.

Another object is the provision of means for rocking the plow base about a longitudinal line through itself, so that the plow base is always located substantially midway between the front wheels.

Another object is to simplify the construction of lister plows. These and other objects are accomplished by means of my invention which consists of a lister plow having a frame, a plow base carried thereby., forward transverse axle, wheels thereon, a central rear support for said frame, and means for rocking said frame about a line passing beneath said frame and through a point of contact of said rear support with the ground.

Reference is now had to the drawings in which- Figure 1 is a plan view of a lister plow embodying my invention;

Fig. 2 is a side elevation of the same, with the left forward wheel removed and showing the plow in operative position; and

Fig. 3 is a front elevation of the same.

l have chosen toillustrate my invention in y connection with a lister plow having a frame 10 which is carried at the forward end on an axle 11 having an arcuate central portion 11a. On the outer ends of the axle 11 are journaled wheels 12 and 13, which as shown in Figs. 2 and 3 act as furrow wheel and land wheel respectively. Bracerods 14 are hingedly connected at their ends to the frame 10 by means of clips 15 and 16. These brace rods each carry a bearing member 17 which is arranged to slide upon the axle 11, as will be seen in Fig. 3 by a comparison with these two members.

The frame 10 is supported at its front ends l by means of rollers 18 which are adapted to roll upon the upper edge of the arcuate portion l1. of the fFOIAlt axle. These rollelS er@ Specication of Letters Patent.

Patented Apr. 5, 1921.

Serial No. 309,387.

carried by brackets 19 which are secured to 'i A plow beam 27 and plow base 2S are carried by the frame 10 in any suitable manner so as to swing therewith. I have shown the plow beam, however, carried at the rear end by means of a crank axle 29, the ends of which are journaled in brackets 30 on the frame 10. r1`his crank axle is adjusted by means of a lever 31 and the quadrant 32. The forward end of the plow beam 27 is hingedly carried by means of a curved link 33, the upper end of which is hingedly mounted on the forward end of the plow frame.

The rear end of the frame is preferably supported by means of angled wheels 341.- which are journaled upon the bent axle 35 which in turn is mounted in a caster bearing 86 4which is secured to the rear yend ofthe frame 10. A seat 37 and foot rests 38 are also provided for the convenience of the driver. rlhe draft means is preferably applied to the clevis 89 which is carried by the curved link 33 at the forward end of the frame.

During the operation of the plow, it assumes the position shown in Figs. 2 and 3, the furrow wheel 12 runs in the furrow as shown in these figures and acts as a spacer, thereby maintaining the new furrow at a constant distance from the last furrow. Owing to the fact that one of the wheels 12 runs in a furrow while the other wheel 13 runs on the unplowed land, it is necessary to provide a leveling means for the plow base 28. rllhis I have provided, as previously described, by mounting the forward end of the frame on the arcuate portion of the axle in such a way that theframe can be rocked on this arcuate portion and about a line which runs through the center of this arcuate portion and the point of support .of the rear Wheels Se 011th@ aroundy This leveling adjustment is accomplished by means of the adjusting lever 2l. The depth of the plow base 28 in the ground is regulated by means of the depth regulating lever 31 which is held in an adjusted position on the quadrant 32.

It will be seen from this description and from the drawings that I have provided an unusually7 simple and neat means for leveling the plow base of a lister plow. v

While I have shown and described but a single embodiment of my invention, it is to be understood that it is capable of many modifications. Changes therefore in the construction and arrangement of parts may belmade which do not depart from the spirit and scope of my invention, as disclosed in the appended claims:

l. In a lister plow, the combination of an axle formed with a vertical arcuate portion and a frame horizontally positioned within the arcuate portion and mounted to be shiftable laterally thereon. 1 y

2. In a lister plow, the combination of an axle formed with a vertical arcuate portion, a frame horizontally positioned within the arcuate portion and mounted to be shiitable laterally thereon and laterally extending members loosely connected to the frameand slidably connected to the axle beyond its arcuate portion.

3. In a lister plow, the combination of an axle formed with a vertical arcuate portion, a frame horizontally positioned within the arcuate portion, a bracket on each side of the frame loosely engaged with the axle and means connecting the frame and axle for shifting the frame laterally on the arcuate portion of the axle.

4. In a lister plow, the combination of an axle formed with a vertical arcuate portion, a frame horizontally positioned within the 6. In a lister plow, a frame, a plow base carried thereby, a transverse axle, wheels thereon, means for rockingsaid transverse axle in substantially a vertical plane with respect to said frame to level said frame, and brace rods for said axle, hingedly mountedy on said frame and slidable with respect to said axle.

7. In a lister plow, a frame, a plow base carried thereby, a forward transverse axle having a vertical arcuate portion on which the frame is suspended, wheels thereon, a central rear support for said frame and means for rocking said frame on ,said arcuate portion about a line passing beneath said frame and through the point of contact of said rear support with the ground.

8. In a lister plow, a frame, a plow base carried thereby, a forward transverse axle having a vertical arcuate portion on which the frame is suspended, wheels thereon, a central rear support for said frame and means for rocking said frame on said arcuate portion about a line passing beneath said frame and through the point of contact of said rear support with the ground, said line passing substantially through a line joining the axes of the forward wheels.

In testimony whereof I alix my signature.

SAMUEL K, DENNIS. 

